Analysis of Hottest-Spot Temperature Distribution in Cast-Resin Dry-Type Transformer Design

Abstract:

In the cast-resin dry-type transformer design, the determination of winding hottest-spot temperature rise is very important. It determines the safe and cost of transformers. In this paper, a thermal model for analysis of the hottest-spot temperature distribution of cast-resin dry-type transformer has been introduced. The model is based on electrical analogy method and a current source is used to represent the thermal flow source of windings, and a nonlinear resistor is used to represent the effect of air in duct. A 500kVA cast-resin dry-type transformer has been selected and experiment is carried out to demonstrate the model

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 1015-1019
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.1015
• Online since: June 2012
• Authors: Xing Tao Sun, Zhang Mu
• Keywords: Design, Hottest-Spot, Temperature, Transformer

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